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use by flagellates

Flagellar propulsion is employed during some stages in the life cycles of certain amoebae, including the vegetative phase of some genera, such as
Mastigamoeba and
Mastigella. The eukaryotic flagellum is a membrane-bound, whiplike structure found not only in protozoans but in animals as well (such as in sperm, the male reproductive cells of animals). The structure of the eukaryotic...